Improvement in gas-machines



UNITED STATES.

PTENT FRANK W. OEELDT, oE NEWARK, NEW JERSEY, AssIeNoR To .RIMsELE f AND CHANDLER o. ooATs, oE'sAME PLACE.

IMPROVEMEN'II IN GASMACHINES.-

Specification forming part of Letters Patent No'. 189,873, dated April 24, 1877; application filed December 28, 1876.

To all whom t may concern Be it known that I, FRANK W. OEELDT, of the city ofNewark, in the countyof Essex and State of NewvJersey, have invented a new and useful Improvement in Gas-Machines, of which the following is a specification:

My invention relates to that class of gasmachines, in which the gas is formed by vaporization of gasoline or other Volatile hydrocarbons.

V,1n the machines of this class previously patented by me the air for vaporization of gasoline is supplied by an induced current of steam froma small boiler, the latent heat of the steam, when liberated by condensation, re-

i placing the. sensible heat of the gasoline made latent by vaporization. Y

To accomplish the same result withoutthe use -of ysteam and its necessary accompaniment, the feed-water, and thus materially to simplify the construction of and lessen the attention necessary for the management of the machine, is the main object of this my present invention. l

The invention consists in the construction and combination of a gas-generating pump and an oil-supply pump, the movements of the formeroperating the latter, which again supplies the gasoline, by the vaporization and consequent expansion of which the former receives its motion, the heat to compensate for that made latent by vaporizat-ion being supplied by a burner from the gas thus made, said burner being regulated automatically and applied to heat the oil-supply as it enters the generating-pump, as will be hereinafter described with reference to the accompanying drawing, in 4which- Figure l represents a vertical section of a complete gas-machine constructed according to this my present invention. Fig. 2 is a top View of details thereof. Fig. 3 shows amodication of the arrangement of the oil-supply pump relative to the oil-tank.

Similar letters of reference indicate llike parts in the different figures.

a is the oil-tank, placed under the ground,

and charged with gasoline through the pipe a', as usual. B is the oil-supply pump, placed either inside of the tank a, as shown in Fig.

1, or outside and connected thereto byapipe, as shown in Fig. 3. The pump B consists simply of a valve-chest, bl, having two ordi' `pipe to the generating-pump. D is the gasgenerating pump, of which E is the pumpbarrel, and F the piston. The lower part f1, or elongation of the piston F, which works in the elongation c1 of the barrel E, is the working area for the expansion of the oil vaporized in the barrel e2 on entering through the pipe C. The upper` part f2 of piston F, which works in the upper and larger part e2 of the barrel E,v forms, with the said barrel e2, the air-chamber for oxygenating the hydrocarbon vapor into illuminating-gas. f1 and f2 are rigidly connected together, and the former is slotted or open through its entire length, with ex.- ception only of its extreme lower end, where it is provided with acheck-valve, c1, closed by a pin or stop, c2, on reaching its lower position, and remaining closed until the piston has ascended to its highest position, when it is opened by striking another stop, c3. To prevent a too sudden concussion, the valve c1 is supplied with a cone of concave shape, so as to close gradually when striking the stop c2. To the upper part of the piston F are attached air-valves all, opening inward. The piston f 2 is provided with a deep flange, d2, which, as the piston descends, dips into an oil cup or recess, da, to lubricate the piston and keep it tight. G is the gas-pipe from the generatingpum to an ordinary gas regulator and holder, H, which, to provide against any danger, Iplace underground outside the building. g is a check-valve to prevent the back-flow of gas.

h1 is a small pipe for leading gas to the burner FFICE.;

2 remera or set of burners, or Argand burner h2, to heat the lower end of the barrel c2 and the gasoline therein.

'.Io regulate the heat-supply automatically I provide the burner h2 with a valve, O, held open by a spiral spring, P, and in the end of the elongation e1 ofthe pump-barrel E I fasten a pin or small rod, Q, with its lower end inimediately above the valve O, in such a manner that, should the heat become excessive, the expansion of e1 and of the pin Q, caused bysuch beat, will cause the pin to press upon and gradually to close thesaid-valve O, and lessen the gas-supply to the burner. I is the gas-supply to the burners of the building. Jis a segment band-wheel, and K an arm` pivoted on a shaft ymounted in bearings in a bracket attached to the pump-barrel E. A band attached to the rim of the wneel J connects with the cord of the oil-pump cylinder b3. On the rimof the wheel J, at the edge of the band, is a smooth lange, i', on which a hook, Z1, of a pawl, L, pivoted to the arm K, rides on the ascending end of the piston F, until it engages in a notch, j', on the dan ge i, in order to turn the wheel J on again descending, and thus raise the oil-pumpcylinder b3. The arm K is connected to the piston F by an intermediate arm, m, pivoted at its upper end to the arm K, and at its lower` end to a lug on the piston F. rIhe pawl L, below its pivot, has an extension, 2, and the arm M, above its upper pivot, has an extension, m', provided with a set-screw, n', which latter engages with the extension Z2 of the pawl L, and unhooks it from the notch in the wheel J when the piston F has completed its desired stroke downward. A spring may be used, if found necessary, to keep the-pawl L against the wheel until released by contact with the screw n.

In dotted lines in Fig. l are shown the relative positions of the arms K M and pawl L,

,when the latter, at the completion of the upward stroke, is about to engage again with the notch j. Instead of the segment-wheel J, a bell-crank lever or other equivalent device may be used. I

The desired distance of fall of the oil-pump cylinder b3, and thereby the quantity of oil to be supplied at each stroke, is regulated by the set-screw n2 on the segment-wheel J, which screw may be adjusted to shorten or lengthen the stroke oi' the wheel J and the pump-cylinder b3 by sooner or later contact with the bracket of the segment-wheel J.

N is a handle attached to the hub of the arm K to form a lever for operating the pump D in starting the machine.

Starting from the positions shown inthe drawing, the oil-pump being at the upper and the generating-pump at the lower end of their respectivestrokes, the operation is as follows l: The limit of the downward stroke of the piston F being reached, the valve c1 is closed by the stop c2 the pawl L is released from the notch j of the wheel J; the pump-cylinder b3 drops, and forces a portion of the gasoline into the lower end e1 of the pump-barrel E, where, heated by the gas-jets h2, it is rapidly vaporized, and, expanding against the lower end f1, raises the piston F. Air enters through the valves d1, and iills the barrel E down to the valve c1 until the said valve c1 is opened by contact with the Apin c3. The vapor from underneath the valve o1 commingles with the air above, closes'the valves d1, and opens the valve g. The pawl L, having then reached the position shown by the dotted lines, engages in the notch j onthe segment-wheel J. The piston F descends, and, being much heavier than the oil-pump cylinder, lifts the latter by oscillating the segmentwheel J. The gasY generated is forced onward to the regulator and burners, and a new portion of oil enters the valve-chest b1, and so on continuously.

Having thus described my invention, what I claim .as new, and desire to secure by Letters Patent, is-

1. A gas-machine eli'ected by the combination of a gas-generating-pump, D, and an oilsupply pump, B, with a supply-tank, A, the supply-pump B being operated by the movements ofthe generating-pump D, thus acting as a feed-pump to the latter, which again is operated by the expansion of the vapor of the oil thus supplied, the vaporization being continually promoted by heat from the burning of gas derived from said generating-pump, substantially as specified. 4

2. The feed-pump B, constructed of the combination of the valve-chest b1 and stationarypiston b2 with the sliding cylinder b3, in

:combination with the generator D of a gas apparatus, substantially as and for 4the purpose specied.

3. The generating-pump D, consisting ofthe piston F, (formed of the two nlain parts f2 and f1, with their respective valves d1 and 01,) in combination with the pump-barrel E, formed of the two parts c2 and el, the latter being provided with the stops or trip-pins c2 c3, substantially -as specified.

4. The arm K, provided with the pawlpL, and the arm M, provided with the set-screw n", in combination with each other, and with the piston F and segment-wheel J, for opertilg the feed-pump B, substantially as speci- FRANK W. OFELDT. Witnesses:

HORACE HARRIS, JOHN G. YOUNG..` 

